The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2003
Filed:
Mar. 15, 1999
Kanetaka Sekiguchi, Sayama, JP;
Masafumi Ide, Tokorozawa, JP;
Takashi Akiyama, Sayama, JP;
Masami Kikuchi, Kodaira, JP;
Yuichi Akiba, Tokorozawa, JP;
Koji Nakagawa, Hachioji, JP;
Koichi Hoshino, Omiya, JP;
Takashi Toida, Tokyo, JP;
Citizen Watch Co., Ltd., Nishitokyo, JP;
Abstract
A watch unit having a time-displaying section, including a reflection-type polarizing film disposed on an upper portion or a lower portion of the time-displaying section or a portion comprising a part of the time-displaying section, an optical modulation section which varies the ratio of a transmission axis to a reflection axis of the reflection-type polarizing film , and a shutter function to shield a portion of or all of the watch unit having the time-display section by varying the reflection intensity and the transmission intensity in relation to the light incident direction using the reflection-type polarinzing film and the optical modulation section, to enhance the appearance and to improve the versatility of the watch unit.